CVE-2023-1776: Github.com/mattermost/mattermost server/v6 Cross-Site Scripting Vulnerability
MODERATECVE-2023-1776 is a MODERATE (CVSS 5.4) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Github.com/mattermost/mattermost server/v6 libraries in the Go ecosystem. The issue involves mattermost vulnerable to cross-site scripting (xss). Remediation is available by upgrading affected packages to version 7.1.6, 7.7.2, 7.8.1.
CVE-2023-1776 at a Glance
Security Impact
CVSS: 5.4
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N).
How to Fix CVE-2023-1776
To remediate this vulnerability, upgrade all affected Github.com/mattermost/mattermost server/v6 dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade github.com/mattermost/mattermost-server/v6 to 7.1.6Upgrade github.com/mattermost/mattermost-server to 7.7.2Upgrade github.com/mattermost/mattermost-server to 7.1.6Upgrade github.com/mattermost/mattermost-server to 7.8.1Upgrade github.com/mattermost/mattermost-server/v5 to 7.1.6Upgrade github.com/mattermost/mattermost-server/v6 to 7.1.6Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for github.com/mattermost/mattermost-server/v6How to Check if You Are Affected
To determine whether your application is affected by CVE-2023-1776, inspect your project dependencies for Github.com/mattermost/mattermost server/v6:
inspect dependencies for github.com/mattermost/mattermost-server/v6Analyze the terminal output to locate any version of Github.com/mattermost/mattermost server/v6 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 7.1.6), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Github.com/mattermost/mattermost server/v6, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2023-1776 Affected Github.com/mattermost/mattermost server/v6 Versions
6 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/mattermost/mattermost-server/v6
|
Go |
≥ 6.0.0
< 7.1.6
|
7.1.6
|
|
github.com/mattermost/mattermost-server
|
Go |
≥ 7.7.0
< 7.7.2
|
7.7.2
|
|
github.com/mattermost/mattermost-server
|
Go |
≥ 7.1.0
< 7.1.6
|
7.1.6
|
|
github.com/mattermost/mattermost-server
|
Go |
≥ 7.8.0
< 7.8.1
All 1 versions
7.8.0
|
7.8.1
|
|
github.com/mattermost/mattermost-server/v5
|
Go |
≥ 5.0.0
< 7.1.6
|
7.1.6
|
|
github.com/mattermost/mattermost-server/v6
|
Go |
≥ 3.3.0
< 7.1.6
|
7.1.6
|
References
Frequently Asked Questions
What is CVE-2023-1776?
Which Github.com/mattermost/mattermost server/v6 versions are affected?
What version fixes CVE-2023-1776?
Is github.com/mattermost/mattermost-server/v6 affected?
Is github.com/mattermost/mattermost-server affected?
What is the CVSS score of CVE-2023-1776?
What CWE is associated with CVE-2023-1776?
How can I check Go dependencies for CVE-2023-1776?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-63f2-6959-2pxj",
"modified" : "2023-04-07T21:09:25Z",
"published" : "2023-03-31T12:30:16Z",
"aliases" : [ "CVE-2023-1776" ],
"summary" : "Mattermost vulnerable to cross-site scripting (XSS)",
"details" : "Boards in Mattermost allows an attacker to upload a malicious SVG image file as an attachment to a card and share it using a direct link to the file. \n\n[Issue Identifier](https://mattermost.com/security-updates/): MMSA-2023-00139",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost-server/v6"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "6.0.0"
}, {
"fixed" : "7.1.6"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 6.7.2"
}
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost-server"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "7.7.0"
}, {
"fixed" : "7.7.2"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 7.7.1"
}
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost-server"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "7.1.0"
}, {
"fixed" : "7.1.6"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 7.1.5"
}
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost-server"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "7.8.0"
}, {
"fixed" : "7.8.1"
} ]
} ],
"versions" : [ "7.8.0" ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost-server/v5"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "5.0.0"
}, {
"fixed" : "7.1.6"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 5.39.3"
}
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost-server/v6"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "3.3.0"
}, {
"fixed" : "7.1.6"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 4.10.10"
}
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-1776"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/mattermost/mattermost-server"
}, {
"type" : "WEB",
"url" : "https://mattermost.com/security-updates"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-79" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2023-04-07T21:09:25Z",
"nvd_published_at" : "2023-03-31T12:15:00Z"
}
}